Mechanical Engineering MCQs

A. To increase the output
B. To increase the efficiency
C. To save fuel
D. To reduce the exit temperature

A. 2-stroke engine
B. 4-stroke petrol engine
C. 4-stroke diesef engine
D. multi-cylinder engine

A. Increase of work ratio
B. Decrease of thermal efficiency
C. Decrease of work ratio
D. Both a. and b. above

A. decreasing the compression work
B. increasing the compression work
C. increasing the turbine work
D. decreasing the turbine work

A. The propulsive matter is caused to flow around the propelled body
B. Propulsive matter is ejected from within the propelled body
C. Its functioning does not depend on presence of air
D. All of the above

A. Net work output and work done by turbine
B. Net work output and heat supplied
C. Work done by turbine and heat supplied
D. Work done by turbine and net work output

A. Increase temperature
B. Reduce turbine size
C. Increase power output
D. Increase speed

A. Increases thermal efficiency
B. Allows high compression ratio
C. Decreases heat loss is exhaust
D. Allows operation at very high altitudes

A. High thermal efficiency
B. Reduction in compressor work
C. Decrease of heat loss in exhaust
D. Maximum work output

A. 2500°c
B. 2000°c
C. 1500°c
D. 1000°c